viciousknid

iTrader: (8)

What are you using to get these codes?
As stated. if you can get HPT or EFi put on there, monitor your o2 to see if it is even working properly.

viciousknid

iTrader: (8)

According to google. P0526 is the fan speed sensor. Are your fans working at the proper speed?
Check your grounds. Unplug the front Right O2 sensor and clear the codes. see what comes back.
If his Rear worked on your Front Right it's possible someone has changed the wires on it.

Silvy6.0

iTrader: (5)

The person that had it before me could have very well changed the plugs. I will unplug it tonight and reset everything. If that does not work, I am going to go down to and buy new ones. I will let you guys know what happens tonight. Monday, I am going to hook it up to an real computer and monitor everything.

Silvy6.0

iTrader: (5)

Ok. I put brand new O2's in. (OEM style). I am still having the code for the passenger front. I have been wanting to get the headers coated since I bought them. (Next time I buy them they will be coated, They are already starting to look bad). Someone told me it may be because it may not be getting enough heat. Does this sound right?

GMCtrk

iTrader: (27)

Coating or no coating should have no effect in my experience. I mean, it was frigid this past week and I had no issues.

Silvy6.0

iTrader: (5)

I am going to coat them tonight. Hopefully that will help. It's like it has a miss. Even when it is cold. I can slowly press the gas pedal and the RPM's will start to climb. While I'm doing this and get to about 1/4 throttle, the RPM's start to go down, even though I continue pressing the pedal down. HAS THIS HAPPENED TO ANYONE, OR DOES ANYONE KNOW WHAT IS GOING ON????

GMCtrk

iTrader: (27)

who did your tune?

1FastBrick

iTrader: (17)

I personally think you have an electrical conection issue....

Here is the basics I coppied for you on the P0155...


A code P0155 may mean that one or more of the following has happened:

O2 Heater element resistance is high
Internal short or open in the heater element
O2 heater circuit wiring high resistance
open or short to ground in the wiring harness

This code refers to the front oxygen sensor on Bank 2. The heated circuit in the oxygen sensor decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. If the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0155.


P0101 =Mass Air Flow (MAF) Circuit Range/Performance Problem
P0103 =Mass Air Flow (MAF) Circuit High Input
P0154 =O2 Sensor CKT No Activity (Bank 2 Sensor 1).
P0155 =02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0480 =Cooling Fan 1 Control Circuit Malfunction
P0526 =EV Cooling Fan Sensor Circuit Malfunction

Silvy6.0

iTrader: (5)

The only time anyone has messed with the computer is when this guy programmed it for no rear O2's and no Cats.

Silvy6.0

iTrader: (5)

Everything was fine until I put the LT's on. What could I have messed up or do I need to check? Could I check voltage at the plug and make sure it's getting power?